Why my local pc to seedbox speed os not crossing 5MBps with SFTP using any major ftp clients.

whn i use FTP its giving me 300mbps as i have1 gbps fiber connection. but the catch is that it's failing large file upload at 80% and giving error as connection aborted.

e.g. for 15GB file upload from local pc to seedbox it's failing at 10GB as connection drops.

Kindly help me , if i have to do any setting change with filezilla or my firewall , i am new to file upload to seed box.